Duomo BX444-Mc Handbuch - Seite 3

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Duomo BX444-Mc Handbuch
BX444Mc Fascia & PCB Layout
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No
Description
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ON
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SERVICE REQUIRED
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SENSORS OVERLOAD
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BATTERY OVERLOAD
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TEST
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RESET
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LCD Display
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1
ALARM
st
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2
ALARM
nd
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MAIN ALARM
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FAULT
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LEL (EXPLOSIVE)
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ppm (TOXIC)
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Supply & Relay Terminals
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Sensor switches
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Positive Safety switch
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Oxygen detection switch
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Sounder Operation switch
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Main Alarm Relay actuation
Emergency Stop
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Connection Terminals
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Sensor/ Battery Terminals
t: 01905 797989
e: [email protected] | w: www.duomo.co.uk
000
ppm
BX444-Mc
LED illuminates when supply voltage is applied.
LED flashes during self diagnosis start up.
This LED flashes when the scheduled service is required. Reminder set to either six months or one year
(determined by risk assessment).
LED Illuminated to indicate short circuit or overload on sensor circuitry.
LED Illuminated to indicate incorrect battery connection or high consumption during charging phase.
When pressed checks the sequence and function of BX444Mc.
Press and hold to initiate a full function test, release once controller is in alarm state required
Will eventually activate all relays and their associated
When pressed resets the detector after an alarm or sensor fault condition.
Represents current BX444Mc status (Normal/Test/Fault/Alarm), Connected sensors (Sensor readings and
settings scroll automatically), Indicates alarm condition and status. (See LCD Display Interface).
At 8% LEL (Explosive) or 120ppm (Toxic) gas concentration:
LED illuminates and the Pre-Alarm relay No.1 is actuated.
(This relay output deenergises when level of gas exceeds 2
At 13% LEL (Explosive) or 200ppm (Toxic) gas concentration:
LED illuminates and the Pre-Alarm relay No.2 is actuated.
At 20% LEL (Explosive) or 300ppm (Toxic) gas concentration:
LED illuminates and the Main Alarm relay is actuated.
LED illuminates to Indicate short circuit, sensor fault, loss of signal, incorrect sensor connection or failure
(In case of sensor failure LED will flash when relevant sensor is scanned).
LED illuminates when internal DIP switch (CO/GAS) for a sensor is moved to GAS (Explosive) position.
As the sensor value is displayed the corresponding LED for that sensor is illuminated.
LED illuminates when internal DIP switch (CO/GAS) for a sensor is moved to CO (Toxic) position.
As the sensor value is displayed the corresponding LED for that sensor is illuminated.
Electrical supply and relay connections. (See Wiring Schematic for connection instructions).
Used to enable or disable a sensor on a zone (ON/OFF) or determine type of gas to be detected (Toxic/
Explosive) - (See Configuring the BX444Mc section for setting instructions).
Positive Safety switch (See Configuring the BX444Mc section for setting instructions).
If set to ON then the BX444Mc can only be used for Oxygen detection and no other types of sensors for any
other gases can be used.
Determines if Sounder remains operational if gas levels drop below alarm threshold.
(See Configuring the BX444Mc section for setting instructions).
Determines if Main Alarm relay remains in position even if gas levels drop below alarm threshold.
(See Configuring the BX444Mc section for setting instructions).
Remove link when Emergency Stop Button is fitted. (See Wiring Schematic for connection instructions).
Sensor and Battery (if fitted) terminals (See Wiring Schematic for connection instructions).
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Purpose & Functionality
Contact Duomo UK on +44 1905 797989
outputs.
(See Configuring the BX444Mc section for setting instructions).
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ON
ON
ON
ON
1 2
1 2
1 2
1 2
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2
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ALARM levels).
nd
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ON
ON
1 2
1 2
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